// ++++++++++++++++++++++++++++++++++++++++
// 《零基础Go语言算法实战》源码
// ++++++++++++++++++++++++++++++++++++++++
// Author:廖显东（ShirDon）
// Blog:https://www.shirdon.com/
// Gitee:https://gitee.com/shirdonl/goAlgorithms.git
// Buy link :https://item.jd.com/14101229.html
// ++++++++++++++++++++++++++++++++++++++++

package main

//func Func1(string string) string {
//	return string + string
//}
//
//func Func2(len int) int {
//	return len + len
//}
//
//func Func3(val, default string) string {
//	if val == "" {
//		return default
//}
//return val
//}
//func Func4(nil int) int {
//	return nil + nil
//}
